VERIFIED SOLUTION i

Automate BPA - Task could not start because Process handle to task could not be duplicated

Issue

Task could not start because Process handle to task could not be duplicated" error comes up in Automate BPA.

Cause

The task service is being run as a named user.

Resolution

UPDATED: October 9, 2017
The task service must be run a local system. Changing the Task Service to be run as local system would resolve the error. 
Environment Details
Product Feature: Task Builder